These codes certainly do give me infinite health and mana, but it also gives infinite health to the enemies of some worlds. So far, the worlds I am encountered this glitch at Halloween town and Atlantica.

Another issue, albeit minor, is running the game at 60 fps. I am aware of the code for this;

// 60 FPS Kingdom Hearts 1 NTSC U/C

patch=1,EE,002B624C,extended,00000000

But while this does give me 60 fps, in game, it speeds up the cutscenes. The characters in cutscene just speed through their dialogue leaving the animation the fall behind 4-5 seconds.